Optical lens system

a technology of optical lens and lens element, applied in the field of optical lens system, can solve the problems of insufficient high-end imaging module of conventional lens system comprising four lens elements, electronic products becoming more and more powerful, etc., and achieve the effect of reducing the size of the optical lens system, reducing the sensitivity of the optical system, and improving image resolution
US20120087019A1Active Publication Date: 2012-04-12LARGAN PRECISION
2 Cites 136 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
LARGAN PRECISION
Publication Date
2012-04-12

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention provides an optical lens system comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power; a third lens element with positive refractive power having a convex object-side surface and a convex image-side surface; a fourth lens element; and a fifth lens element having a concave image-side surface, the object-side and image-side surfaces thereof being aspheric and at least one inflection point being formed on the image-side surface. Such arrangement of optical elements can effectively minimize the size of the optical lens system, lower the sensitivity of the optical system, and obtain higher image resolution.
Need to check novelty before this filing date? Find Prior Art

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATION

[0001] This non-provisional application claims priority under 35 U.S.C. §119(a) on Taiwanese Patent Application No(s). 099133981 filed in Taiwan, R.O.C., on Oct. 6, 2010, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to an optical lens system, and more particularly, to a compact optical lens system used in a portable electronic product.

[0004] 2. Description of the Prior Art

[0005] In recent years, due to the popularity of portable electronic products with photographing functions, the demand for a compact imaging lens system is increasing, and the sensor of a general photographing camera is none other than CCD (Charge-coupled Device) or CMOS device (Complementary Metal-oxide-semiconductor Device). Furthermore, as advances in semiconductor manufacturing technology have allowed the pixel size of sensors to be reduced, and the resolut...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More